Adaptation of an Asperity Ploughing Model to Measured Roll Topographies

摘要

A previously published asperity ploughing model [1,2] has been adapted in order to approximate the measured as-ground roll surface topography.The model is then integrated with classical cold rolling plastic deformation equations including coupling to the lubricant film evolution through the roll bite.The friction distribution through the roll bite is thus a function of the specific details of the roll surface topography as well as the process parameters,predictions of roll force,torque and forward slip as well as sliding distance and volume of metal swept out by the asperities are then made and compared to experimental measurements for an aluminum alloy rolled on a laboratory rolling mill.